68442507897 has 8 divisors (see below), whose sum is σ = 91269368256. Its totient is φ = 45621993072.

The previous prime is 68442507851. The next prime is 68442507929. The reversal of 68442507897 is 79870524486.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68442507897 - 2¹⁹ = 68441983609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68442507897.

It is not an unprimeable number, because it can be changed into a prime (68442507827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561158 + ... + 1604399.

It is an arithmetic number, because the mean of its divisors is an integer number (11408671032).

Almost surely, 2^68442507897 is an apocalyptic number.

It is an amenable number.

68442507897 is a deficient number, since it is larger than the sum of its proper divisors (22826860359).

68442507897 is a wasteful number, since it uses less digits than its factorization.

68442507897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172767.

The product of its (nonzero) digits is 27095040, while the sum is 60.

The spelling of 68442507897 in words is "sixty-eight billion, four hundred forty-two million, five hundred seven thousand, eight hundred ninety-seven".